- Lead
- 2,582
- Total
- 43,930
- vs nation
- R+4.4
Pennsylvania 40th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,310
- Total
- 43,822
- vs nation
- R+12.0
- Lead
- 6,196
- Total
- 38,236
- vs nation
- R+18.3
- Lead
- 5,234
- Total
- 36,066
- vs nation
- R+18.4
- Lead
- 4,101
- Total
- 37,646
- vs nation
- R+18.2
- Lead
- 3,553
- Total
- 37,058
- vs nation
- R+7.1
- Lead
- 1,775
- Total
- 32,827
- vs nation
- R+5.9
- Lead
- 742
- Total
- 30,207
- vs nation
- R+11.0
Key facts
- 2024 presidential margin
- R+5.9MIT Election Lab
- Population
- 66,2912024 5-year
- Population density
- 1,841 / sq mi2024 5-year · TIGER/Line
- Land area
- 36 sq miTIGER/Line
- Median household income
- $121,7692024 5-year
- White (non-Hispanic)
- 90.0%2024 5-year
- Black
- 1.1%2024 5-year
- Hispanic / Latino
- 2.0%2024 5-year
- Peak Democratic margin
- D+17.1 in 1936MIT Election Lab
- Peak Republican margin
- R+63.1 in 1904MIT Election Lab
- Most similar
- State House District 28, PA · twin score 98.7
presidential history
Party record book
Pennsylvania 40th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
58.2%
21,557 votes · D+16.8 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 57.2%
Republican
Theodore Roosevelt1904
79.2%
6,123 votes · R+63.1 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 74.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
21,557votes
58.2% of the vote · D+16.8 · modeled estimate
Runner-up · Kamala Harris, 2024 · 20,474 votes
Republican
Dwight D. Eisenhower1956
24,596votes
62.0% of the vote · R+24.2 · modeled estimate
Runner-up · Richard Nixon, 1972 · 24,418 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Walter Mondale1984
+13.0pts D vs U.S.
Place R+5.2 · U.S. R+18.2 · modeled estimate
Runner-up · Michael Dukakis, 1988 · +9.2 pts
Republican
William McKinley1896
+43.5pts R vs U.S.
Place R+49.6 · U.S. R+6.1 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +43.4 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 51.4%19,244 | 48.6%18,176 | 37,420 |
Pennsylvania 40th State House District sits in the Mid-Atlantic. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 17.1 points in 1936 and a Republican high of 63.1 points in 1904. Between 2020 and 2024 the district moved 1.7 points toward the Democratic candidate; the 2024 margin was 5.9 points.
A population of 66,291, a 90% non-Hispanic-white share, and a median household income of $121,769 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 28 and State House District 30.
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Pennsylvania 40th State House District. Akashic. https://akashic.app/sld-lower/42040/. Accessed May 20, 2026. License: CC BY 4.0.